Comparative analysis of modern empirical spectrophotometric atlases with multicolor photometric catalogues

TL;DR

This paper compares various modern empirical spectrophotometric atlases with multicolor photometric catalogues, revealing their accuracy levels and identifying systematic errors, especially at shorter wavelengths.

Contribution

It provides a comprehensive comparative analysis of spectral atlases using WBVR photometric data, highlighting their accuracy and systematic issues.

Findings

Standard error of synthesized magnitudes is about 0.02 mag.

Some spectral atlases contain significant systematic errors.

Agreement is good in the 5000-10000 Å range, but issues exist below 4400 Å.

Abstract

We present the results of the comparative analysis of the most known semi-empirical and empirical spectral atlases that was carried out using the data from the WBVR photometric catalogue. The results show that standard error of synthesized stellar magnitudes calculated with SEDs from best spectral atlases reaches 0.02 mag. It has been also found out that some of modern spectral atlases are burdened with significant systematic errors. The agreement for the 5000-10000 A spectral range is rather satisfactory, while there are problems for wavelengths shorter than 4400 A.